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-rw-r--r--commit.c10
1 files changed, 7 insertions, 3 deletions
diff --git a/commit.c b/commit.c
index bee066fa3..5632e3268 100644
--- a/commit.c
+++ b/commit.c
@@ -511,12 +511,16 @@ static int add_rfc2047(char *buf, const char *line, int len,
bp += i;
for (i = 0; i < len; i++) {
unsigned ch = line[i] & 0xFF;
- if (is_rfc2047_special(ch)) {
+ /*
+ * We encode ' ' using '=20' even though rfc2047
+ * allows using '_' for readability. Unfortunately,
+ * many programs do not understand this and just
+ * leave the underscore in place.
+ */
+ if (is_rfc2047_special(ch) || ch == ' ') {
sprintf(bp, "=%02X", ch);
bp += 3;
}
- else if (ch == ' ')
- *bp++ = '_';
else
*bp++ = ch;
}